Virtual Switching System (VSS) is a Cisco technology that enables two physical switches to operate as a single logical switch. With VSS, two physical switches are interconnected and operate as a single entity, with one control plane and one data plane. This configuration provides several benefits, including:

VPC is a Nexus technology, while VSS is a Catalyst 6500/6800 technology. In VSS two 6500/6800 are seen as a single device, both forwarding planes are active, but only one control plane is active. You have only one ip to manage these devices.

Hello! i have s 4500-x switcher with VSS , i just add Fast-Hello Dual-Active Detection 4500-x , but when i remove VSL my switch stack on recovery mode and when i connect VSl again the switch still on recovery mode

Nor do any of the major on-line rack renters offer this as an option. The only time you configure it is when you first add the two switches to the VSS domain. This process is fully documented by Cisco. If you follow the Cisco validated design it is also very stable The only time I've seen VSS break is when the code hits some obscure software bug.

Catalyst 6500 Release 12.2SX Software Configuration Guide - Virtual Switching Systems (VSS) [Cisco Catalyst 6500 Series … as far as number 2. MEC, mutli-chassis etherchannel is basically a way of creating an etherchannel that spans multiple switches.

My guess is that it is required as part of the role determination process as to which switch is active and which switch is standby when converting from stand-alone to VSS mode. Migrate Standalone Cisco Catalyst 6500 Switch to Cisco Catalyst 6500 Virtual Switching System - Cisco . Switch 1 - Port-Channel 1. System detected Virtual Switch ...

2.1.h [ii] VSS concepts; 2.1.h [iii] Alternative to STP; 2.1.h [iv] Stackwise; 2.1.h [v] Excluding specific platform implementation . but for the lab exam there is no mention in the blueprint. To my knowledge, VSS config for either the CCIE Written, which has no config component to begin with, nor the lab exam, are in play...

VSS is used to connect 2 chassis together like the big 6500's or 4500's whereas stacking is used to stack multiple switches together to form 1 big switch like the 2960's or 3750's. There is loads of info available on the Cisco site for VSS and its configuration but im unable to …

Cisco Live Presentation, How to Achieve True Active-Active Data Centre Infrastructures, BRKDCT-2615. This document presents several options including the impact on recovery from a failure if you connect vPC from one data centre to VSS on the other data centre.

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